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From: John Baldwin <jhb@FreeBSD.org>
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Date: Wed, 9 Jun 2004 10:27:43 -0400
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cc: Ian FREISLICH <if@hetzner.co.za>
Subject: Re: panic: spin lock held too long (reasonable load)
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On Wednesday 09 June 2004 09:25 am, Ian FREISLICH wrote:
> Hi
>
> I got this about an hour ago, maybe 10 minutes into a 'make world
> -j8' on my SMP system.  I'll reproduce the panic and drop into the
> debugger if possible if someone is willing to tell me what information
> appart from this backtrace will be helpful.

Unfortunately this is a known deadlock that can happen with swapping that 
there isn't an easy fix for.  If you want a quick hack, try commenting out 
the 'wakeup(&proc0)' line in setrunnable().  It might take a bit longer for 
the kernel to swap processes back in but should avoid the deadlock.

-- 
John Baldwin <jhb@FreeBSD.org>  <><  http://www.FreeBSD.org/~jhb/
"Power Users Use the Power to Serve"  =  http://www.FreeBSD.org